Reading Comprehension: Detail Questions
According to the passage, advertising's role was to
Although this answer choice may be inferred from the passage, the passage only states that the goal of the advertising was to influence young men and women's psychological perceptions of diamonds.
Remember, this is a Detail Question, so must only look for what is stated explicitly in the passage.
The passage explicitly states that advertising encouraged young women to perceive diamonds as part of courtship and marriage, not young men.
Although movie stars were used in De Beers' advertising, the passage does not state that in the relevant lines. In addition, the goal of the ads was to use young women's tendency to emulate movie starts - not to cause them to do so.
The passage explicitly states that advertising's job was to make young men think that the size of the diamond was linked to the amount of love they felt.
The passage does not state that diamonds had been linked to love before De Beers' advertising campaign; on the contrary, it can be inferred the campaign was an initiative to create that connection. Therefore, the word preserve (i.e., maintain, sustain, or support an existing thing) eliminates this answer choice.